Home / 10,909.77-15,061.19-8,514.60

Finding the Fourth Proportional to 10,909.77, 15,061.19 and 8,514.60

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Solution

The fourth proportional to 10,909.77, 15,061.19 and 8,514.60 is: 11,754.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,909.77 : 15,061.19 = 8,514.60 : x
  2. Step 2: Convert to fraction form
    10,909.77/15,061.19 = 8,514.60/x
  3. Step 3: Cross multiply
    10,909.77x = 15,061.19 × 8,514.60
  4. Step 4: Simplify right side
    10,909.77x = 128,239,965.80
  5. Step 5: Solve for x
    x = 128,239,965.80/10,909.77
  6. Step 6: Final answer
    x = 11,754.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.